Elastic wheel for vehicles.



M & R. BAUDOU.

ELASTIC WHEEL FOR VEHICLES.

APPLICATION FILED MAY7. 1914.

Patented June 5, 1917.

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MAURICE BAUDOU AND RENE BAUIDOU, OF LES EGLISOTTES, NEAR BORDEAUX,FRANCE.

ELASTIC WHEEL FOR VEHICLES.

Specification of Letters Patent.

Patented J nine 5, 1917.

To all whom it may concern.-

Be it known that we, MAURICE BAUDoU' and RENE BAUDOU, of the Frenchnationality, residing at Les Eglisottes, near Bordeaux, Gironde, inFrance, have invented certain new and useful Improvements in ElasticWheels for Vehicles, of which the following is a specification.

This invention relates to an elastic wheel for railways, motor cars andother vehicles traveling on the ground, on roads or on rails.

This elastic wheel comprises three parts:

(1) A circumferential partconstituted by a metal rim with spokes ofmetal wires or of stamped out sheet metal. It is provided with the treadof metal or other material such as rubber.

(2) A central part secured to the hub or to the axle, normallyconsisting of two equidistant metal disks. These two parts are distinctfrom each other.

3) An intermediate part or vibrating ring arranged between the twopreceding rim. This part can slightly move in the radial directionbetween the two other parts, in accordance with unevenness of the groundor asperities of the road.

3 The vibrating frame consists of an annular metal disk providedwith'two concentric series of holes to each ofwhich is welded, forinstance by autogenous welding, a metal tube projecting to an equaldistance to the right and to the left of the disk. Into each of thesetubes is driven with force an annular cylindrical core of compressedrubher having an outside diameter slightly larger than that of the tube.In the central hollow portion of the core is mounted an ordinary spindlehub provided with ball bearings or rollers at each of its ends. Thespindles of the spindle hubs of the smaller ring of cores pass throughholes provided in the parallel disks secured to the axle andconstituting the central part, and are firmly secured to the said disksby means of nuts. The spindles of the hubs of the larger ring of corespass through holes provided in two parallel rings, for instance of angleirons secured to the circumferential part of the wheel and to its rim.Nuts screwed into the interior of the said rings, securely hold in placethe said hubs on the said rings.

parts and not in contact with the axle and The central disk is providedwith two concentric series of tubes lined with rubber cores. It isarranged in a plane normal to the axle, and its metal tubes are arrangedparallel to the axle.

The reactions due to the difference in level of the road, areelastically transmitted to the axle by the vibrating frame-work arrangedbetween the circumferential part secured to the rim, and the centralpart secured to the axle.

The accompanying drawing shows this kind of elastic wheel.

Figures 1 and 2 show, in vertical section through the axis, the elasticwheel.

Fig. 3 is a separate view showing a side elevation of the vibrating ringused in the construction of wheel shown in Fig. 1.

Fig. 4 is a separate view showing a side elevation of the vibrating ringused in the construction of wheel shown in Fig. 2. Fig. 5 is a sectionthrough the line X-X of Fig. 3 of a portion of the vibrating ringassumed to be hollow and represented on a larger scale.

The circumferential part comprises a metal rim 1 having a tread band 2thereon, and two parallel rings of angleiron 3 con nected concentricallyto the rim 1 by wires 4.

The central part is constituted by two parallel circular metal disks 5mounted on the axle A andheld, if necessary, at an equal distance apartby distance rods.

The vibrating frame work consists in an annular metal disk 6 arrangedbetween the rings 3 and the disks 5. In the holes drilled in twoconcentric lines in the said disk 6, are rigidly secured by autogenouswelding, metal tubes 7 into which are forced annular rubber cores 8provided in their central hollow, with a spindle 9 supported by the core8 by means of ball bearings 10. The ends of the spindles 9 are secured,as regards the series of cores nearest to the axle A, to the disks 5 bymeans of nuts 11, while the ends of the spindles 9 of the series ofcores 8 nearest to the rim 1, are secured to angle iron rings 3 by meansof nuts 12. In order to prevent the cores 8 from coming out from thetubes 7, the extreme edges of the latter are expanded or flanged overagainst the ends of the cores as shown. Any other method could be usedfor preventing them from coming out.

It will be seen that with this construction 'of elasticwhe'el, theintermediate part provided with tubes filled with rubber cores, beingsupported on the one hand by the axle I 5 A and on the, other hand bythe rim 1', plays the part of vibrating framework freely moving in thevertical plane under the impulses received by the wheel on contact withuneven portions of the road. It follows that the shocks received by thetread band 2, are

, and 15, are added.

On" the radial lines going from the center of the disk 6 through theaxes of the tubes 7 cross-bars 14 and 15 are rigidly secured to the disk6, so as to project at each side of the disk and touch the angle ironrings 3 and the disks 5,respect'ively (Figs. 1 and These bars'form stopswhich give a greater rigidity to the wheel.

-,The two ends ofthe spindles 9 passi'ng' 3Q through the axistof thetube 7 of the outer series, can also besecur'ed to the ends 16 of .ashackle or bracket 17 passing through the hollow hub'of the disk 6' ofthe vibrating tring, a nd, a crossbar 15 can be rigidly se- 5 cured tothe disk 6 and to the arms 16 so as to project from the said arms andtouch the disks" 5 (Figs. 2 and 4:). This arrangement of makin thc barsradial as at 16 also gives great rigidity to the" wheel. 40 The endsofthecross-bars 15 can be round ed on in the shape of a ball (see Fig.5). They are made of tempered steel in order that their sliding againstthe'inner faces of I the disks 5 should take place practically withoutfriction or wear. In order to lubri'cate the inner faccscf the disks 5'against Y which strike the ends of the cross-bars15 (Fig. 1), thevibrating 6; is hollow (see i Fig. 5) and the cross bars-are likewisehol- 501cc:- and perforated by holes 18 opposite to the hollow chamber20 of the ring; the curved ends of the said hollow bars (Fig. 5)

are likewiseperforated 1 in the center by a hole 19," Asthechamber 20 isfilled with oil, the

I .55 la tterp'asse's through theholes 18 in the bar 15, and flowsthrough the holes 19 to the inner sides of the'di'sks 5'. Obviously thesame arrangement may be used for lubricating the cross-bars 14' and theangle-ir0ns 3;

a, We -claim:

1. In an'ela'sti'c wheel for vehicles traveling on roads or rails, thecombination of a circumferential part comprising a rim and two commut-parallel and circular rings connected to the rim by wires, a centralpart formed by two parallel, metallic and circular rings mounted on theaxle, and a vibrat-- ing ring formed by an annular, metallic disk Iplaced in the middle of the plane of the wheel, between the parallelrings of the circumferential part and the parallel rings of the centralpart, the said vibrating ring being provided with two concentric rows ofmetallic tubes each inclosing an annular core of compressed rubber inthe hollow hub of which is mounted a spindle combined with aballbearing, the ends of the spindles of one of the rows of cores beingsecured to the rings ofthe central part and the spindles of the otherrow of cores being secured to the rings of the circumferential part, andtwo series of guides, the ends of one of them touching the inner facesof the circular rings.

2. In an elastic wheel for vehicles traveling on roads :or rails, thecombination of a 35 circumferential part comprising a rim and twoconcentric, parallel and circular rings of angle iron connected to therim by wires,

a central part formed two parallel, are

tallic and circular rings mounted on the axle, and'a vibrating ringformed by an annular, metallic disk placed in the middle of the plane ofthe wheel, between the parallel rings of the circumferential part andthe parallel rings of the central part, the said vibrating ring beingprovided" with two con- 7 centric rows of metallic tubes each inclosingI an annular core of compressed rubber in the hollow hub of which ismounted a spindle combined with a ball bearing, the ends of the spindlesof one of the rows of cores being secured to the ringsofthe central partand the spindles of the other row of cores being secured to the rings ofthe circumferential part and two concentric rows of cross bars rigidlysecured to the middle disk and projecting to thesame extent at each sideof the disk so that the ends of the outer row of bars touch the innerfaces of theangle iron rings, and the ends of the inner row of barstouch the inner faces of the parallel rings of the central part, I

31' In an elastic wheel for vehicles traveling on roads or rails, thecombination, of a circumferential part comprising a rim and twoconcentric, parallel and circular rings of angle iron connected to therimby wires, a central part formed by two parallel, metallie andcircular rings mounted on theaXle, and a vibrating ring formed by anannular, metallicdiollow disk placed in the middle plane of the wheel,between the parallel rings of the circumferential part and the parallelrings of the central part, the said vibrating ring being provided withtwo concentric rows of metallic tubes each inclosing an annular core ofcompressed rubber in the hollow hub of which is mounted a spindlecombined with a ball bearing, theendsof the spindles of one of the rowsof cores being secured to the rings of the central part and row of barstouch the inner faces of the par- 10 the spindles of the other row ofcores being allel rings of the central part, the bars being secured tothe rings of the circumferential PI' Vided 'With Small 1101 8 S h t lbricant part, and two concentric rows of hollow placed in the hollowdisk can pass out from cross-bars rigidly secured to the middle disk theends 9 the barsand projecting to the same extent at each In testlmqny hf We have slgned 0111 1 side of the disk so that the ends of the outernames to thls speclficatlonrow of bars touch the inner faces of theMAURICE BAUDOU. angle iron rings, and the ends of the inner RENE BAUDOU.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

